GB1470423A - Indicating instruments - Google Patents

Indicating instruments

Info

Publication number
GB1470423A
GB1470423A GB3721574A GB3721574A GB1470423A GB 1470423 A GB1470423 A GB 1470423A GB 3721574 A GB3721574 A GB 3721574A GB 3721574 A GB3721574 A GB 3721574A GB 1470423 A GB1470423 A GB 1470423A
Authority
GB
United Kingdom
Prior art keywords
scale
pointer
coarse
aperture
feet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3721574A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Smiths Group PLC
Original Assignee
Smiths Group PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Smiths Group PLC filed Critical Smiths Group PLC
Priority to GB3721574A priority Critical patent/GB1470423A/en
Priority to IT51028/75A priority patent/IT1041297B/en
Priority to US05/606,812 priority patent/US3978730A/en
Priority to JP50101993A priority patent/JPS5146149A/ja
Priority to FR7526053A priority patent/FR2282622A1/en
Priority to DE19752537664 priority patent/DE2537664A1/en
Publication of GB1470423A publication Critical patent/GB1470423A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
    • G01C5/005—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels altimeters for aircraft
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D13/00—Component parts of indicators for measuring arrangements not specially adapted for a specific variable
    • G01D13/02—Scales; Dials
    • G01D13/12—Graduation
    • G01D13/14—Graduation for rotations of more than 360 degrees
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S116/00—Signals and indicators
    • Y10S116/43—Navigation devices

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measuring Fluid Pressure (AREA)
  • Indicating Measured Values (AREA)
  • Length-Measuring Instruments Using Mechanical Means (AREA)

Abstract

1470423 Altimeters SMITHS INDUSTRIES Ltd 26 Aug 1975 [23 Aug 1974] 37215/74 Headings G1L and G1S [Also in Division G4] An instrument such as an altimeter in which a pointer 19 moves over a scale 20 providing a fine indication and a second scale 26 shows the number of revolutions made by the pointer to give a coarse indication, has the second scale visible through an aperture 24 at the zero 22 of the first scale and moving in the opposite direction to the pointer 19 so that during transition between coarse units, the pointer indicates generally on the scale 26 between which of the coarse units the total reading lies. The aperture is preferably wide enough to expose at least two of the coarse scale numerals. The reading on the altimeter dial shown is 7,950 feet, the scale 26 being marked in 1,000 feet units and each revolution of the pointer 19 indicating a 1,000 feet. A step 29 may be provided in the aperture 24 to obscure a sub-division graduation and reduce further the possibility of misreading. The scale 26 may be on a part transparent disc behind which an adjustable indicator 31 of air-pressure at ground level is visible.
GB3721574A 1974-08-23 1974-08-23 Indicating instruments Expired GB1470423A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB3721574A GB1470423A (en) 1974-08-23 1974-08-23 Indicating instruments
IT51028/75A IT1041297B (en) 1974-08-23 1975-08-21 IMPROVEMENT IN INDICATOR INSTRUMENTS
US05/606,812 US3978730A (en) 1974-08-23 1975-08-22 Indicating instruments
JP50101993A JPS5146149A (en) 1974-08-23 1975-08-22
FR7526053A FR2282622A1 (en) 1974-08-23 1975-08-22 INSTRUMENT GIVING A GLOBAL INDICATION OF A PARAMETER AND A PRECISE VALUE MARKED BY A NEEDLE WITH INDEFINITE ROTATION
DE19752537664 DE2537664A1 (en) 1974-08-23 1975-08-23 DISPLAY TOOL

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3721574A GB1470423A (en) 1974-08-23 1974-08-23 Indicating instruments

Publications (1)

Publication Number Publication Date
GB1470423A true GB1470423A (en) 1977-04-14

Family

ID=10394722

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3721574A Expired GB1470423A (en) 1974-08-23 1974-08-23 Indicating instruments

Country Status (6)

Country Link
US (1) US3978730A (en)
JP (1) JPS5146149A (en)
DE (1) DE2537664A1 (en)
FR (1) FR2282622A1 (en)
GB (1) GB1470423A (en)
IT (1) IT1041297B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52132334A (en) * 1976-04-30 1977-11-07 Hidetoshi Tsuchida Photocell utilizing crosslinked high molecular pigment
US5033402A (en) * 1989-08-23 1991-07-23 Peet Bros. Company, Inc. Metric/English orometer
US7313962B1 (en) 2005-12-05 2008-01-01 O'neil George J Altimeter with Kolsman window clarifier
US7852236B2 (en) * 2008-07-31 2010-12-14 Honeywell International Inc. Aircraft synthetic vision system for approach and landing

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR812956A (en) * 1936-01-27 1937-05-21 Jaeger Ets Ed Advanced altimeter
US2208728A (en) * 1937-10-14 1940-07-23 Bendix Aviat Corp Altimeter

Also Published As

Publication number Publication date
JPS5146149A (en) 1976-04-20
IT1041297B (en) 1980-01-10
US3978730A (en) 1976-09-07
DE2537664A1 (en) 1976-03-04
FR2282622A1 (en) 1976-03-19

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee